Abstract
We present a fixed-parameter algorithm that constructively solves the k-dominating set problem on graphs excluding one of K 5 or K 3,3 as a minor in time O(416.5√k n O(1)), which is an exponential factor faster than the previous O(2O(k)nO(1)). In fact, we present our algorithm for any H-minor-free graph where H is a single-crossing graph (can be drawn in the plane with at most one crossing) and obtain the algorithm for K 3,3(K 5)-minor-free graphs as a special case. As a consequence, we extend our results to several other problems such as vertex cover, edge dominating set, independent set, clique-transversal set, kernels in digraphs, feedback vertex set and a series of vertex removal problems. Our work generalizes and extends the recent result of exponential speedup in designing fixed-parameter algorithms on planar graphs by Alber et al. to other (nonplanar) classes of graphs.
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Demaine, E.D., Hajiaghayi, M.T., Thilikos, D.M. (2002). Exponential Speedup of Fixed-Parameter Algorithms on K 3,3-Minor-Free or K 5-Minor-Free Graphs. In: Bose, P., Morin, P. (eds) Algorithms and Computation. ISAAC 2002. Lecture Notes in Computer Science, vol 2518. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36136-7_24
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